This is without a doubt the best game of the round. A titanic struggle! The players’ tasks surpassed human abilities, but for a long time both grandmasters produces the moves of the highest quality. The outcome of the game was decided by the clock. Svidler did everything a little bit quicker and more practical. Ivanchuk got into the horrible time trouble, blew his advantage, and fell down.
There were many interesting moments to point out. I will note Peter’s daring novelty 13.g4!? and a number of exceptionally strong moves by Vassily, who managed to refute White’s wing activity with the powerful central counterplay.
The deciding moment of the game was quite dramatic. Both players overlooked the 23…Qa4! resource, which could give Black an edge (therefore White had to put the pawn on g5 without taking on e6 first), and then Ivanchuk incorrectly rushed taking on f2. He could maintain the tension by 25…Qf8! After the text-move White came up with a fantastic resource – 27.gxh6!!, and Black had no checks to seriously bother the White’s king.
Black’s flag fell at the same time when Vassily resigned the game.

Kasimdzhanov-Karjakin
Black easily solved the opening problems. The 6.g3 variation of the
Slav Defense, selected by the former world champion, is considered
harmless, and this game did not shake the conclusion. By 7…c5! the Wijk
aan Zee winner transposed the game into a Catalan-like structure, and
initiated major simplifications. His energetic rook maneuvers (17…Rd5!,
20…Re5+!) forced the opponent to repeat the moves. The game ended in a
friendly way without much trouble.

Eljanov-Grischuk
Pavel
did not dare risking a large scale battle against an uncomfortable
opponent. In the Meran Slav he allowed Grischuk to carry out the
freeing с6-с5, and the subsequent simplifications clarified the
following assessment: total equality. A just and fair draw.

Aronian-AkopianThe younger player of the Armenian Olympic team painfully squeezed a
victory in the game against the elder one. Vladimir, in my opinion,
played too passively.
In the Slav Defense the board was quickly crossed by the pawn chains, and the game entered the slow maneuvering stage.
I am not sure in Black’s 12th move, which gave White freedom on the
queenside. Perhaps Black should have maintained the tension.
Later in the game White methodically attacked Black’s weakness on c6,
while his opponent for some reason did not look for countermeasures. I
think Black could try e6-e5 on 23rd or 26th move, in order to get some
hopes of equalizing. However, Akopian played passive and was eventually
smothered to death. Starting from the move 31 and till the end, Aronian
played a perfect endgame and created a textbook example of converting
the advantage.

Gelfand-Alekseev
This
game is full of fine nuances. Evgeny tried to use an unusual opening
move order in his favor. If he played 13…0-0, White could seize the
control over the e4-square by 14.Rfe1!, obtaining a well-known position
with an advantage. Black’s 13…Ne4!? provoked immediate crisis. Boris
accepted the challenge and stroke in the center. He managed to keep the
enemy king in the center, but failed to create a dangerous attack,
because of the exchange of the queens.
Having realized that he may end up in a worse ending, Gelfand
sacrificed an exchange (25.Rxa7!), and it all started to look dire for
Black. However, Alekseev cleverly returned the material (26…Rxe5!),
which led to an easy draw.

Kamsky-BacrotAlmost
every game of the American grandmaster can be printed in an endgame
manual. This time he played for the stronger side, but the game was
nevertheless drawn.
In the Marshall Attack the players went for an old and well-explored
line. A complex ending arose; Black’s bishop pair almost compensated
for White’s extra pawn. The dispute does on for decades. One of the
recent examples is Caruana-Sargissian, Merida 2008. In order to
equalize, Black must advance the kingside pawns to create weaknesses in
White’s camp. However, Bacrot preferred his own way, which proved
wrong. Unsuccessful maneuvers 25…Ra8 (better is 25…f6 or 25…g5) and
30…Bf8 (30…Kf8! is clearly better) allowed White activating his pieces.
The threat of exchanging the dark-squared bishops forced Etienne to
enter a difficult ending with opposite-colored bishops and a minimal
pawn deficit.
However, the Frenchman managed to survive. Maybe White’s game while the
rooks were on the board can be improved. The bishop ending (after
46.Kxc3) was not rosy for Black either. White would win if he could
obtain the connected passed pawns on f- and g-file, but Black
skillfully defended against this possibility and held a draw on fine
nuances.

Leko-Mamedyarov
Black
made an important improvement in the Rauzer Sicilian – 14…Qc5! (earlier
moves are 14…h5 and 14…Qa7), which allowed his to trade the queens, as
the standard 15.Qd3 would lose a piece after 15…b4!
Still, White retained certain pressure in the endgame. Leko did
everything he possibly could. His skillful maneuvers (16.Bh5!, 23.a4!)
weakened the opponent’s position, and then he even managed to break
through in the center (26.d6!), but the drawing tendencies were too
strong, and the opposite colored bishops didn’t help White either.
Mamedyarov defended accurately, and the draw is in order.